1. It is mainly the most commonly used molding mold in the production of thermoplastic parts. The processing equipment corresponding to plastic injection molding molds is the plastic injection molding machine. The plastic is first heated and melted in the bottom heating cylinder of the injection machine, and then pushed by the screw or plunger of the injection machine, it enters the mold cavity through the injection machine nozzle and the mold pouring system. The plastic is cooled and hardened into shape, Demoulding to obtain products. Its structure usually consists of molding components, pouring systems, guiding components, ejection mechanisms, temperature control systems, exhaust systems, support components, and other parts. The manufacturing materials usually use plastic mold steel modules, and the commonly used materials are carbon structural steel, carbon tool steel, alloy tool steel, high-speed steel, etc. The injection molding processing method is usually only applicable to the production of thermoplastic products. Plastic products produced using injection molding technology are very extensive, from daily necessities to various complex mechanical, electrical, transportation parts, etc., all of which are formed using injection molds. It is the most widely used processing method in plastic product production.

2. Plastic compression molding molds

There are two types of structural molds, compression molding and injection molding. They are a type of mold mainly used for forming thermosetting plastics, and their corresponding equipment is a pressure forming machine. According to the characteristics of plastic, the compression molding method heats the mold to the molding temperature (usually between 103 ° -108 °), and then puts the measured compression molding powder into the mold cavity and feeding chamber, closes the mold, and the plastic softens and flows under high heat and pressure. After a certain period of time, it solidifies and forms the desired product shape. The difference between injection molding and compression molding is that there is no separate feeding chamber. Before molding, the mold is closed, and the plastic is preheated in the feeding chamber to form a viscous flow state. Under pressure, it is adjusted and squeezed into the mold cavity to harden and form. Compression molds are also used to shape certain special thermoplastic materials, such as thermoplastic blanks that are difficult to melt (such as polytetrafluoroethylene), resin lenses with high optical properties, and slightly foamed nitrocellulose automotive steering wheels. The compression molding mold is mainly composed of a cavity, a feeding cavity, a guiding mechanism, a pushing component, a heating system, and so on. Pressure injection molds are widely used for packaging electrical components. The materials used in the manufacturing of compression molding molds are basically the same as those used in injection molds.